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F. F. VOIGT. MACHINE FOR MAKING SCREW THREADS FOR PIPE JOINTS.A

No. 333,904. Patented Jan. 5, 1886.

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MACHINE POR MAKING SCREW THREADS POR PIPE JOINTS. N0. 333,904. PatentedJan. 5, 1886.

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--@W. E 3a. mym- .Httorney UNITED STATES PATENT OFFICE. l

FERDINAND F. VOIGT, OF VALLA VALLA, WASHINGTON TERRITORY.

MACHINE FOR MAKING SCREW-THREADS FOR PIPE-JOINTS.

SPECIFICATION forming part of Letters Patent No. 333,904l dated January5, 1886.

Application iiled October 16, 1884. Serial No. 145,677. (Model.)

To @ZZ whom it may concern.-

Be it known that I, FERDINAND F. Voler, a citizen of the United Statesof America, residing at WallaValla, in the county of Walla Walla andTerritory of Vashington, have invented a new and useful Machine forMaking Stove-Pipes, of which the following is a specication.

My invention has relation to machines for making stove-pipes of thatclass having a screw-thread or Worm formed or swaged on the end.

My invention consists in the improved means for forming or swaginga wormor screw on the ends of a stove-pipe joint, as will be hereinafter morefully described, and specifically pointed out in the claims.

In the accompanying drawings, forming a part of this specification,Figure lis a side elevation of my improved machine in operativearrangement, the section of pipebeing broken away to show thearrangement of the formers. Fig. 2 is avertical sectional view takenthrough the linex x of Fig. l. Fig. 3 is a longitudinal verticalsectional view of the swaging-machine, taken through the line y y ofFig. 2. Fig. 4 is a perspective view of a guide-clamp, and Fig. 5represents a section on the line 5 5 of Fig. 1.

The letter A represents the frame of the swaging or forming machine,which may be of any substantial construction, herein consisting of thestandards a, held firmly together by cross pieces or braces b, theextensions or feet of the frame at the base being adapted to be rigidlysecured to the foundation as may be desired. In the upper portion of theframe are formed journal-bearings c, in which is mounted the rotatingshaft B. This rotating shaft B is provided with the gear-wheel d, gearedto mesh with the gear fixed to the power, and is also provided with asmall gear wheel, e, fixed to the end of the shaft and adjusted to meshwith a larger gear-wheel fixed ries of half-round annuli, for thepurpose of fitting within the series of grooves formed in thematrix-roller, as hereinafter stated.

Theletter D represents the power, havj ing iixed on that part of theshaft extended between the power and the frame the small gear-wheel gand gear-wheel h, meshing, respectively, with the gears on the rotaryshaft and shaft carrying the power-gearing, as desprojected through thesame, adjacent to or bearing against the face of the other cap or toppiece of the frame, and on the under side provided with a spring, k,adapted upon releasement from pressure at the top of the bar to removethe matrix from Contact with the former. That part of the bar Fextending outside of the cap of the frame is made round and has on theend thereof screw-threads m, to receive a washer, n, transverselythrough which and the end of the shaft is projected a pin, o, theprojected part of which is supplied with a movable washer, p, thepurpose of this washer being to press against the edge of theguiding-clamp, hereinafter described, and so to admit of the rotation ofthe pipe during the operation of swaging.

The letter G represents the matrix-roller, cored out to properly fit theround part of the bar F, and provided with a gear-wheel, q, to mesh withthe gear f on the rotating shaft, as shown. This bar, provided with itsadjuncts, as described, is disposed in seats r r', formed in the caps ofthe frame, substantially as seen .in Figs. l, 2, and 3 of the drawings.

The letter H represents a loop or stirrup,

the side arms of which are formed with aperbridge thereof, whereinoperates the set-screw S, by which means the position of that end" icoof the bar is set in it-s relation to the position of the matrix uponthe former. In the other cap of the frame is a set-screw, z, by whichthe pressure of the matrix is gaged during the operation of forming thescrew upon the pipe.

The letter I represents the base or be'd piece on which the frame is setand secured, and the letter` .I represents an adjustable guidebed hingedor pivotally attached to the base, so as to admit of a swinging motionfrom side to side. I have shown it as pivoted at u, and the other end ofthis guide-bed as formed with a graduated slotted arm, c, thegraduations indicating any pitch which it is desired to give to thethread on the pipe. The clampingscrew or set-screw w, passed through theslot in the graduated arm, secures the'adjustable guide-plate in anydesired position. The adjustable guide-bed J is formed with horizontalgrooves a', arranged, preferably, about midway of its depth, and isformed or provided on its upper surface with a rack, b', substantiallyas shown in Figs. 1 and 5 ofthe drawings.

The letter K represents the base ofan adjustable guide-stand, providedwith side pieces, c,secured thereto, and having the lower parts struckat right angles to the side, to engage and vmove in the slots on thesides of the adjustable guide-bed.

The letter L represents standards, properly connected at the top orformed of a single piece, shaped substantially as shown in the drawings,which standards are secured to the movable base K. In the movable baseis a pawl, d', pivotally secured therein and engaging the teeth of therack, in order that the base may be held against displacement during theoperation ot' making the thread upon a piece of pipe.

The letter M represents a clamp and carrier adjustably secured to thestandards. The bed e of this clamping-carrier is fitted to the spacebetween the standards, and is formed with a screw-threaded hole, f', inthe end thereof, and also a vertical screw-threaded hole, f2, and formedalso with the extended arms gand g2. The clamping-plate h is set againstthe sides of the standards and secured in place by a set-screw, i',which passes into the screwthreaded hole in the body of the carrier andclamps the carrieriirmly in position. Mounted in the perforations of theextended arms of the carrier is a shalt or rod, j', formed with studs orannulus k2, which, in conjunction with nut Z3, limit its horizontalprogression in either direction, and the end of this rod or shaft isformed with screw-threads Z', and disposed about it, between theextended arms ot' the carrier, is a coiled spring, Z2, whose free endrests and has bearing against a washer or plate, l, on the shaftj', bywhich the disk and shafts are thrown forward to a normal position aftera section of pipe is removed.

7c3 representsva nut on the inner end of the shaft j, for the purpose ofsecuring the disk N on said shaft.

Fitted in the top or cross-piece of the standard is an adjusting-screw,O, the screw part of which passes through the screw-threaded hole in thebody of the carrier, the purpose of this screw being to adjust theelevation of the carrier, and with it the shaft and its disk.

The letter N represents a disk secured to the shaftj, and having set inits face a series of split studs, m', arranged in radial directions inthe face of the disk, the object of these'studs being to receive andretain the end of a joint of pipe, while the other end is being passedbetween the rollers of the swaging-machine.

The letter IJ represents a guiding-clamp to be placed about and securedto a joint of pipe during the operation of making the grooves upon theends. This clamp consists of a metallic band, n, made in two sectionshinged together, and the sections formed with edges gradually convergingfrom one end to the other, the broadest end n2 being formed with acnt-away space to receive the narrow end when brought around, theprojecting side wings,g,ofsuch cut-away portion being formed withconcave ends, to properly adjust themselves to the rotating stud tixedto the end of the non-rotating shaft or bar. At the broad end of theguiding-clamp are formed bearings t', mounted in which is a shaft, u',having a screw-hole in the center to receive an arm of theclamping-leverw. The clamping-arm 102, which is pivotally'secured to thelower arm, which is adapted to engage with a slot and bring the cam ofthe clamping-arm in engagement with the projectingV ends o f the bearing104, formed on the free end of the guidingclamp, substantially as seenin Fig. l of the drawings. The clamping-guide is lined with leather orsimilar substance, to prevent unnessary abrasion of the pipe.

In Fig. l I have shown a section of pipe, Q, in position in the machineto have the worm or thread pressed upon it.

The operation of the machine may be stated as follows: The adjustableguide-bed having been set by means of the guide-frame and clampingscrewto obtain the desired pitch of the thread, the carrier, with the disk,is adjusted so that the vertical radius of the disk and the pipethereto' attached shall be on a line with the vertical radius of theswaging-rollers, and so that the line of pipe shall be parallel with theline of the axis of the rotating roller. The clampingguide is thenadjusted to the pipe ata position limiting the extent of the screw orworm, and the threaded end of the pipe is then adjusted between theformersv with the projection of the clamping-guide resting against themovable washer at the end of the matrix-roller. Then the bar carryingthe matrix-roller may be adjusted to a suitable pressure on the section'of pipe, when, by

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the application of power, the pipe is drawn .between the formers and thethreads or worm formed thereon, the stud on the end of the bar carryingthe matrix-roller, directing uniformly the pitch of the thread.

By means of the sliding base the standard carrying the disk may bearranged at any desired distance to suit any length of pipe, and may beset in such position securedl against backward displacement by means ofa pawl in the base engaging with the teeth of the rack, while thevertical adjustment of the carrier, shaft, and disk can be made by meansof the lifting-screw passed through the screw-hole in the carrier. Aftersuch position of elevation is ascertained or reached, the carrier can besecured by means of the clamping-screw.

In the operation a backward movement of the disk is made by reason ofthe progression ofthe thread, but the relative position of the pipe ismaintained.

In the drawings I have demonstrated the formers as having a series offorming rings and grooves. It is evident that the purpose will beaccomplished by a single ring and corresponding groove.

What I claim as my invention, and desire to secure by Letters Patents,is-

l. The rotary shaft formed or provided with a former on the free endthereof, and means, substantially as described, for imparting motionthereto, in combination with adetachable non-revolving shaft or barmounted parallel with the revolving shaft, a rotary former mountedloosely ou a round extension of the non-revolving shaft and havinggearengaging gear on a rotary shaft, an adjustable stirrup or loop to carryand adj ust the square free end of the non-revolving bar, and means,substantially as described, to raise and lower the bar in its seat nextto the former, as set `forth.

2. The rotary shaft, formed or provided Wi th a former on its free end,and means, substantially as described, for imparting motion thereto, incombination with a non-revolving adjustable bar or shaft mounted looselyin seats and arranged parallel to the revolving shaft, and provided withaspring fixed to the under side thereof to raise the bar, and across-pin projected transversely through the bar to hold it againsthorizontal movement, an adjusting loop or stirrup to carry and set thefree end of the bar, a rotary former mounted loosely on the roundextension of the non-revolving shaft or bar and provided with gearengaging with the gear on the revolving shaft, and held in position onits axle by a screw-nut, a rotary guide washer mounted on a stud passedtransversely through the end of the fixed rotary shaft, and a clamp forgaging the pressure of the matrix, substantially as described, and forthe purpose stated.

3. The rotary shaft formed or provided with a forjner on its free endand means for imparting rotation thereto, in combination with thenon-revolving shaft or bar mounted parallel with the rotary shaft andprovided with means, substantially as described, to raise and lower it,a former mounted on a round extension of the non-rotary shaft, and gearto lnesh with gear on a rotating shaft, and a rotary guide-washermounted on a stud or axle projected transversely through the end of thenon-rotary shaft, substantially as described.

4. The base-plate formed with horizontal grooves in its side faces, andpivotally secured at one end to admit of movement in ahorizontal line,and provided with means to gage and set it in position, and a rack onits upper face, and a sliding basevplate provided with a pawl to engagethe rack and having vertical standards secured thereto, in combinationwith an adjustable carrier on said standards, a horizontal shaftjournaled to said carrier, and a revolving disk provided with means uponits outer face to hold a joint of stove-pipe and adjustably secured tosaid shaft, substantially as described.

5. The vertical standards or frame, a carrier to slide within the frame,a shaft having alimited horizontal movement mounted in the carrier andprovided with a spring to return the shaft to position, and means,substantially as described, to adj ust the carrier in elevation andclamp it on the standards, in combination with the disk detachable andadjustably secured on the shaft, and having clasps radially set on itsouter face, substantially as described, and for the purpose stated.

6. In a stovepipemaking machine, a rotary disk provided with a series ofholding studs or clasps arranged radially to the axis thereto,substantially as described, and for the purpose stated.

7. The guiding-clamp formed with its edges on a line with the pitch of athread to be impressed or formed on the joint of pipe, in combinationwith the formers mounted upon revolving and non-revolving shafts, andoperated substantially as set forth.

8. The guidingclamp consisting oftwo semicircular pieces hingedtogether, said pieces being formed of an outer metallic plate and aninner iiexible lining, and with its edges conforming to the pitch of aworm or thread to be formed on a pipe, and having the wider endcentrally cut away to admit the other end, and provided with projectingside wings adapt ed to serve as seats for the guiding-stud on theformer, substantially as described.

9. In combination, a rotary shaft carrying a former on its free end,means for imparting motion thereto, a non-revolving shaft or bar mountedparallel with the rotary shaft, means, substantially as described, forraising and lowering the non-rotating shaft, a rotary former mounted ona rounded projection of the nonrotary bar and receiving motion from therotary shaft, and a rotary stud or washer pivotally secured to a stud oraxle projected through the end of the non-rotary bar, a revolving diskprovided with a series of hold- IOO IIS

ha" ing-studs on its 'outer face: and mounted onda In testimony whereofI have hereunto set shaft having a limited horizontal movement, my handin the presence of two attestingwitand mounted on a carrier having meanst0 nesses.

- I adjust and set it in elevation, and a guide- FERDINAND F. VOIGT.

5 clamp adapted to Clamp about a joint of stove- Attest: i Y

pipe, substantially as described, and for the F. W. GOODHUE,

purpose set forth. A W. C. PAINTER.

